class Dyn_Student{
private:
	int mssv;
	float* diemArr;
	int diemNums;
public:
	Dyn_Student();
	Dyn_Student(int);
	Dyn_Student(const Dyn_Student&);
	~Dyn_Student();
	void nhapMssv();
	void nhapCacDiemSo();
	float diemTrungBinh();
	void showMssvDiemTB();
};
